We spent more than 20 hours researching 160 USB battery packs,brought in almost 50 pounds of batteries, and tested them in a specialist lab in Vancouver, or British Columbia,all to find the best USB battery pack for any situation. Whether you need a pocketable pack to collect through an evening out, a unit to leave in your bag to preserve your device going for a busy day of meetings, and plenty of power for a week on the road,we’ve got you covered.
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Source: gawker.com